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00768

Sigma-Aldrich

1-Ethyl-3-methylimidazolium tetrafluoroborate

for electrochemistry, ≥99.0% (HPLC)

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Synonym(s):
EMIMBF4
Empirical Formula (Hill Notation):
C6H11BF4N2
CAS Number:
143314-16-3
Molecular Weight:
197.97
MDL number:
MFCD00216668
UNSPSC Code:
12352100
PubChem Substance ID:
329747135
NACRES:
NA.22

grade

for electrochemistry

Quality Level

100

Assay

≥99.0% (HPLC)

form

liquid

impurities

≤200 ppm water

refractive index

n20/D 1.413 (lit.)

bp

>350 °C (lit.)

mp

15 °C (lit.)

density

1.294 g/mL at 25 °C (lit.)

anion traces

bromide (Br-): ≤10 mg/kg
chloride (Cl-): ≤10 mg/kg
nitrate (NO3-): ≤10 mg/kg
sulfate (SO42-): ≤10 mg/kg

SMILES string

F[B-](F)(F)F.CCn1cc[n+](C)c1

InChI

1S/C6H11N2.BF4/c1-3-8-5-4-7(2)6-8;2-1(3,4)5/h4-6H,3H2,1-2H3;/q+1;-1

InChI key

CUNYTRQQXKCRTJ-UHFFFAOYSA-N

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Application

1-Ethyl-3-methylimidazolium tetrafluoroborate is a room temperature ionic liquid widely used as an electrolyte in electrochemical studies. Its diffusion coefficient, 13C spin-lattice relaxation times, and nuclear Overhauser enhancements have been analyzed using NMR techniques to study its hydrogen bonding. Some of its fundamental physical and chemical properties such as density, viscosity, thermal stability, surface tension, refractive index and pH have been studied over a wide range of temperature.

Pictograms

Exclamation markEnvironment
GHS07,GHS09

Signal Word

Warning

Hazard Statements

H302,H411

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 2

WGK

WGK 3

Flash Point(F)

235.4 °F

Flash Point(C)

113 °C

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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NMR evidence of hydrogen bonding in 1-ethyl-3-methylimidazolium-tetrafluoroborate room temperature ionic liquid
Huang JF, et al.
Inorgorganica Chimica Acta, 320(1-2), 7-11 (2001)
Physical and electrochemical properties of 1-alkyl-3-methylimidazolium tetrafluoroborate for electrolyte
Nishida T, et al.
Journal of Fluorine Chemistry, 120(2), 135-141 (2003)
Electrochemical study of copper in a basic 1-ethyl-3-methylimidazolium tetrafluoroborate room temperature molten salt
Chen PY and Sun IW
Electrochimica Acta, 45(3), 441-450 (1999)
The Room Temperature Ionic Liquid 1-Ethyl-3-methylimidazolium Tetrafluoroborate: Electrochemical Couples and Physical Properties.
Fuller J, et al.
Journal of the Electrochemical Society, 144(11), 3881-3886 (1997)
Sungwon Lee et al.
Nature communications, 5, 5898-5898 (2014-12-20)
To measure electrophysiological signals from the human body, it is essential to establish stable, gentle and nonallergic contacts between the targeted biological tissue and the electrical probes. However, it is difficult to form a stable interface between the two for
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